The aim, among other things, is to find out if there are signs of human trafficking or hate crimes. Daravan is one of many Roma from Romania who is in Stockholm to try to find a job. He tells Swedish Radio of an incident some time ago when some unidentified men fired at the car he was sleeping in.
"There was someone who came with a gun and shot at the car. The police knew about it because they were there," says Daravan.
Knowledge of crime related to Roma and other poor EU citizens in Sweden is low, according to Fredrik Persson, who is chief of staff inside the National Police, which will now start with a survey.
"This is about crimes that these people are exposed to, are forced to perform or commit themselves to their own advantage," he says.
The information he says should mainly come from the local police regions notified on reported crimes, other statistics and contact with other organizations. The work will be completed by autumn 2015.
But how will the police come to any crime that never reported, or get in touch with people who are afraid of the police?
"It's part of the task to develop methods for gathering information," said Fredrik Persson.